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Electrochemical method

Dec 16, 2016

Electrochemical treatment of wastewater, which is directly or indirectly the use of electrolysis, in water of toxic substances into nontoxic substances. In recent years due to the development of the power industry, power supply and greatly reduce treatment cost, electrochemistry has become one of the most competitive method of wastewater treatment. Dye wastewater by electrochemical cleaning according to the electrode reactions occur in different ways, generally consists of internal electrolysis, electro-coagulation electrical float, oxidation, etc.

Internal electrolysis method is the use of waste in a variety of pollution without energy consumption composition and color, disadvantage is the slow response, the response column clogging, of high concentration wastewater treatment effects. Usually wastewater by inner electrolysis method for preprocessing, at the same time removing part of the COD, can significantly improve the biodegradability of waste water, lay the Foundation for follow-up treatment. Electro-coagulation electro-flotation in comparison with chemical coagulation method, the material loss reduction of about half, less sludge and no bulky dosing measures. The drawback is the consumption of energy and materials consumption is too large. Advantages of electro-Catalytic oxidation is the organic full, no secondary pollution, but truly applying this method in industrial waste water treatment depends on high cheap high efficiency catalytic electrode for oxygen evolution potential and electrode and electrolytic cell structure to reduce the energy consumption also plays an important role. Jia Jinping were studied using activated carbon fiber electrode degradation for analog dye wastewater with iron compound electrodes, and achieved good results.